MOS Magnetic Optical Sensor Urchins The included filter sock can

The included filter sock can be easily removed in favor of the NanoMat for enhanced mechanical filtration with an auto-advance fleece roll

Minimum Tank Size 220 gal

Coral Snow is a widely used secondary biological filter that helps increase the clarity of your water and now Coral Snow Plus has the same filtration benefits while reducing phosphate levels in reef tanks

Max Size 6"

Dual probe for safety :The aquarium heater controller will alarm once the temperature difference between 2 probes is more than 5℉(3℃)

MOS Magnetic Optical Sensor Urchins The included filter sock canThe Magnetic Optical Sensor replaces our optical sensor with magnet and offers an improved look, feel, and magnetic design that also lends itself to help prevent water incursion into the sensor. This sensor plugs into your FMM and, using reflected infrared light, will signal your Apex when it changes state from being wet to dry or dry to wet. This sensor can be used for constructing your own ATO (auto top off), as a high level warning sensor in your